Horses need different levels of feed and nutrition in their diet depending on age, current weight, activity level and overall health. An equine's stomach is a delicate balance of getting the right proteins, grains, hay, supplements, water intake and proper digestions of these substances. With literally hundreds of different feed types available, this can be quite challenging for a new or even veteran horse owners. There are times when you may want to switch feeds, look for signs of your horse gaining too much weight or loosing weight. Speak to your barn manager, they can customize feeding to your horses needs.